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Water heater breakdown: 5 common causes and when to call a plumber
Water heater 7 min read

Water heater breakdown: 5 common causes and when to call a plumber

No more hot water or just lukewarm? Discover the 5 most common causes of a water heater breakdown and when a plumber becomes essential.

1. A scaled-up heating element

On the French Riviera, hard water quickly scales the heating element, which then heats poorly and eventually fails. Regular descaling extends the appliance's life and limits electricity use.

2. A faulty thermostat

If the water is too cold or scalding hot, the thermostat is often to blame. Replacing it is a routine job that restores normal operation without changing the whole water heater.

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3. A worn anode

The anode protects the tank from corrosion. When it is worn, the tank deteriorates and leaks appear. Checking and replacing the anode during servicing avoids premature tank replacement.

4. An electrical problem

A tripped breaker or a faulty day/night contactor can cause the lack of hot water. A diagnosis avoids dangerous handling.

5. A tank at the end of its life

Beyond 10 to 12 years, a water heater becomes unreliable and energy-hungry. Replacing it with a recent, better-insulated or thermodynamic model is often more cost-effective than a repair.

Frequently asked questions

FAQ

Under 8 years, repair is usually preferable. Beyond 10 years or with a tank leak, replacement is more economical long term. Our plumber advises you objectively.
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